The Strain-Energy Criterion of Iso-σθεθ Line for Mixed Mode Crack in Concrete
The fracture process of concrete structures is a very complex process, which includes the crack initiation, cracking, expansion and unstable failure. Based on the analysis of existing fracture criterion theories and some experimental data, this paper proposed the strain-energy criterion of I so- line for mixed mode crack in concrete. This formula is easy to be deduced, clear in physical concept; besides, it predicts the crack initiation angle θ0 and determines propagation of the crack. The guidelines of the theoretical predictions are consistent with the measured results, which show that the guidelines can be applied to analysis crack problems of concrete I-II mixed mode fracture.
Guangfan Li, Yong Huang and Chaohe Chen
S. L. Chen et al., "The Strain-Energy Criterion of Iso-σθεθ Line for Mixed Mode Crack in Concrete", Advanced Materials Research, Vols. 250-253, pp. 50-57, 2011